Gate



Dec. 19, 1922. 1,439,604.

H. F. BUTLER.

GATE.

FILED AUG. 13,1921. 3 sucns su'sn 2.

- A. jfzazze INVENTOR WITNESSES,

ATTORNEY Dec. 19, 1922.

. 1,439,604. H. F. BUTLER.

\GATE.

mso AUG. 13. 1921.

3 SHEETS-SHEET 3- INVENTOR if wliwzssesz ,BuZZeI;

ATTO RNEY Patented Dec. 1 i9, 1922.

lAdt tt -i HARRY I meet: K AHQM OKLAHQMA- earn.

Application filefi August 13, 1921. Serial No, 492,041.

To all whom it may concern:

Be it known that I, HARRY F. BUTLER, a

citizen of the United States,

residing at Oklahoma city, in the county of ()klahoma 5 and State of @klahoma, have invented new and useful Improvements in Gates, of which the following is -a specification.

This invention relates to improvements in elevator gates and is especially intended for use in connection with freight elevators.

An object of the invention i s the provi sion of a gate, which will be automatically opened when the elevator reaches a landing and automatically closed leaving.

as the elevator is Another object is the provisionofa gate oi this character, which will be normally locked against movement and-automatically released for operation by an approachlng elevator so as to permit of its operation and automatically relocked when the gate sumes its closed position.

Another object isv the provision ofmeans for. moving the .gate to an open position below the landing, so as to leave an unobstructed opening when the elevator 1s at the landing and to prevent an unguarded opening, whenthe elevator leaves the land- /Vith the above and other obj the invention further includes ing novel features and details tion, to be hereinaf the follow- 7 of constructer. more fully described,

illustrated in the accompanying drawings and pointed out inthe appended claims.

In the drawings Figure 1 is a vertical sectiona through a portion of an elevator shaft,

1 view taken showing a portion of an elevator, a' landing gate and an operating mechanism therefor,

the gate being shown in closed position.

Figure 2 isa similar view showing the gate open.

, Figure 3 is a sectional view 33 of Figure 1 lookingin the the arrow.

Figure 4 is a [section on the Figure 1.

Figure 5 is a similar view on the line,5- 5

of Figure 1.

on the line direction vof Figure 6 is a section on the-line 6-6 of Figure 3 showing themeans for locking and releasing-the elevator gate.

Figure 7 is a detail perspective view of one end ofthe elevator, showing one ofthe gate operating rack bars and the lock aotuating lugs carried thereby.

Referring in detailto the drawings, wherein like characters of reference denote correspondingparts, the reference character 10 indicates an elevator well and 11 indicates one of the floor landings. The elevator is shown at 1 and is of the type designed to carry freight. Any desired'nieans may be provided for operating the elevator and as this operating means constitutes no part ofthe invention, it is not-thought necessaryv thatit be illustrated;

@ositioned at the landing so as to close the opening from the landing to the well 16, is agate 13. This gate is mounted for sliding movement in guide grooves 14 arranged at opposite 810.88 of "the landing above and below the latter. The gate may be of any desired structure and has secured at eachend a vertically disposed rackbar 15,;theteeth of which extend inwardly or toward-the well. l

Secured to upright members .16, arranged atopposite sides of the landing opening, is aspur, gear 17,.which is mounted to revolve upon a shaft 18. Tlhis gear is arranged within a housing19 secured "to the upright members 16, the said housing forming a bearing for one end of the shaft 18. A'n additionalspur g'earQO is-n ounted upon av shaft 21 projecting from thenpright 16, the said gear being of relatively small diameter and also being engaged by a similar gear 22 which is mounted upon 'shaftl23. llhe shafts 21 and 23 haveone oftheirends arranged in bearings formed by afhousing 24 which is secured to the upright 16. T he gears 17 and 20 .engagetherack bar-15, so that when either of these gears-is rotated, the gate will be raised or lowered inacc'ordanoe with'the direction of rotation ofthe gear. v a

Secured uponopposite sides of the iele vator 121 ,and arrangedito engage the gears gage and operate these gears.

Assuming that the gate is in the closed position shown in Figure 1 and the elevator is ascending, as soon as the teeth 26 of the rack barengage the gear 17, the lat-ter'will be rotated and through its engagement with the rack bar 15 will move the gate downward below the landing 11. The length of the rack bar is such that when, the elevator reaches the level of the landing, the gate 13 will be moved downward to a position substantially flush with or below the r level of the landing. Further upward movement of the elevator will disengage the landing,

teeth 26 from the gear 17 and immediately succeeding such disengagement, the teeth 26 will engage the gear 22, which is located in the path of the teeth, and cause the gear 20 to rotate in a reverse direction from the direction of rotation of the gear 17. This will impart an upward movement to the gate through the rack bar 15. When the gate reaches its fully raised position, the teeth 26 will be disengaged from the gear 22 so that upward movement of the gate is stopped.

For the purpose of preventing operation of the gate when the elevator'is between landings, there is provided upon the shaft 18, a notched disk 27. This disk is connected by means of a rod 28 with a disk 29, the last mentioned disk being eccentrically mounted as shown 30. The disk 29 is designed to enter an arcuate opening 31 provided in one end of the -members and is further connected by means of a rod 32 with a toothed segment 33. The rod 32 is eccentrically connected to the segment 33 as shown at 3e, and the latter is mounted upon a shaft 21 previously mentioned. The teeth of the segment 33 are engaged by atoothed disk 35 which is mounted upon the shaft 23 and which is provided with a notch 36. As will be seen from Figure 3 of the drawings, the disk 35 is positioned between the gear 22 and the upright 16, while the disk 27 is positioned upon the outer or opposite side of the gear 17, so that the said disks 35 and 27 are out of vertical alignment.

v Adjustably secured to the standards 25 near the upper ends thereof are blocks 37, while similarly secured to these standards near their lower ends and upon the sides of the standards opposite'theblocks 37, are blocks 38.

As the ascending elevator approaches the the blocks 37 engage the notches of the disk 27 which are located upon opposite sides of the landing opening and rotate these disks. This movement will, through the medium of the rods 28, rotate the eccentrically mounted disk 29- to disengage the same from the openings 31 of the elevator gate so as to permit of the operation of the gate through the operation of the gears 17. This operation will also rotate the segment through movement of the rod 32, and the notch 36and the disk 35 will be positioned for engagement by the block 38. After the elevator leaves the landing and as the teeth 26 disengage from the gears 22, in the manner previously described, the block 38 will enter the notches 36 of the disks 35 so as to operate the latter to return the eccentric disk 29 to its normally engaged position within the openings 31. This action will be reversed during a reverse or downward movement of the elevator. I 1

The invention is susceptible of various changes in its form, proportions and minor details of construction and theright is herein reserved to make such changes as properly fall within the scope of the appended claims.

Having described the invention what is claimed is i l. The combination with an elevator landing gate mounted for vertical sliding movement, of means including an eccentri cally mounted member for locking the gate against movement and means carried by the elevator and engageable with the gate locking means for operating the latter to lock and release the gate and means for op erating the gate after the release or the locking means.

2. The combination with an elevator landing gate mounted for vertical sliding movement, of an eccentrically mounted member engageable with the gate for looking the same, means located above and below said member for operating the eccentrically mounted member to lock and unlock thegate, means carried by the elevator and engageable with the operating means to actuate the latter and means for operating the gate after the release of the gate looking means.

3. The combination with an elevator landing gate mounted for vertical sliding movement, of an eccentrically mounted member engageable with the gate for locking the same, upper and lower rotatable members arranged in vertical oil'set relation and having an operative connection with the eccentrically mounted member to actuate the latter, means carried by the elevator for engagement with the rotatable members I to impart movement thereto and meansfor operating the gate after released by her. v

4. The combination with an elevator landing gate mounted ,or vertical sliding movement, of an eccentrically mounted member engageable with the gate for lockthe latter has been the eccentrically mounted mem- Cit ing the same, upper and lower rotatable members arranged in Vertical offset relation and having an operative connection With the eccentrically mounted member, adjustable elements carried by the elevator for engagement With the rotatable members to actuate the latter and cause the eccentrioally mounted member to lock and unlock the gate and means for operating the gate after the release by the eceentrically mounted member.

In testimony whereof I affix my signature.

HARRY F. BUTLER. 

